bore diameter


bore diameter
   1. In a rifled barrel it is the minor diameter of a barrel which is the diameter of a circle formed by the tops of the lands.
   2. In a shotgun it is the interior dimensions of the barrel forward of the chamber, but before the choke.

Forensic science glossary. . 2012.

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  • bore diameter — The diameter of the cylinders. It is usually measured in either inches or millimetres. When a cylinder is bored out because of scoredwalls, it is increased by ten thou of an inch (0.01 ) or 0.25 mm …   Dictionary of automotive terms

  • Gauge (bore diameter) — The Gauge or bore of a shotgun or rifle is a unit of measurement used to express the diameter of the barrel. The gauge or bore of a barrel is equal to the number of solid spheres of lead each having the same diameter as the inside of the barrel… …   Wikipedia

  • Bore — may refer to:* Bore (engine), the diameter of a cylinder in a piston engine * Bore (wind instruments), the interior chamber of a wind instrument * Bore (woreda), a district of Ethiopia that includes the town of Bore * Bore, Italy * Gauge (bore… …   Wikipedia

  • bore — bore1 boreable, borable, adj. /bawr, bohr/, v., bored, boring, n. v.t. 1. to pierce (a solid substance) with some rotary cutting instrument. 2. to make (a hole) by drilling with such an instrument. 3. to form, make, or construct (a tunnel, mine,… …   Universalium

  • bore-stroke ratio — The relation between the diameter of the cylinder bore and the length of the stroke of the piston. If the stroke is longer than the cylinder bore diameter then the engine is called a long stroke engine. If the stroke is shorter than the cylinder… …   Dictionary of automotive terms

  • diameter — The distance between one edge of a circular object to the other edge and passing through the center. Also see bead seat diameter bore diameter circle diameter external diameter inside diameter internal diameter major diameter minor diameter …   Dictionary of automotive terms

  • Bore (engine) — Bore is the diameter measurement of the cylinders in a piston engine. Engine displacement is calculated by: The term bore can also be applied to the bore of a locomotive cylinder. See also Stroke (engine) Compression ratio Cylinder head porting… …   Wikipedia

  • bore — bore1 [bôr] vt. bored, boring [ME boren < OE borian, to bore < bor, auger < IE base * bher , to cut with a sharp point > Gr * pharein, to split, L forare, to bore, ferire, to cut, kill] 1. to make a hole in or through with a drill or… …   English World dictionary

  • Bore — (b[=o]r), n. 1. A hole made by boring; a perforation. [1913 Webster] 2. The internal cylindrical cavity of a gun, cannon, pistol, or other firearm, or of a pipe or tube. [1913 Webster] The bores of wind instruments. Bacon. [1913 Webster] Love s… …   The Collaborative International Dictionary of English

  • bore — Ⅰ. bore [1] ► VERB 1) make (a hole) in something with a drill or other tool. 2) hollow out (a gun barrel or other tube). ► NOUN 1) the hollow part inside a gun barrel or other tube. 2) the diameter of this: a small bore rifle …   English terms dictionary


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